如何在NSString中找到最后一个子字符串？ - How do I find the last occurrence of a substring in an NSString?

问题：

How would I get the last occurrence of an NSString within another NSString? 如何在另一个NSString中获得最后一次出现的NSString？ For example, in "abc def ghi abc def ghi," I want to find the index of the second "abc," not the first. 例如，在“abc def ghi abc def ghi”中，我想找到第二个“abc”的索引，而不是第一个。 I know I could do this with a bunch of rangeOfStrings, but is there already a function for that? 我知道我可以用一堆rangeOfStrings做到这一点，但是它已经有了这个功能吗？

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解决方案：

参考： https://stackoom.com/en/question/AEn3